/* from http://java.sun.com/docs/books/tutorial/index.html */
import java.io.eofexception;
import java.io.fileinputstream;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.io.objectinputstream;
import java.io.objectoutputstream;
public class dataiotest2 {
public static void main(string[] args) throws ioexception {
// write the data out
objectoutputstream out = new objectoutputstream(new fileoutputstream(
"invoice1.txt"));
double[] prices = { 19.99, 9.99, 15.99, 3.99, 4.99 };
int[] units = { 12, 8, 13, 29, 50 };
string[] descs = { "java t-shirt", "java mug", "duke juggling dolls",
"java pin", "java key chain" };
for (int i = 0; i < prices.length; i++) {
out.writedouble(prices[i]);
out.writechar('/t');
out.writeint(units[i]);
out.writechar('/t');
out.writechars(descs[i]);
out.writechar('/n');
}
out.close();
// read it in again
objectinputstream in = new objectinputstream(new fileinputstream(
"invoice1.txt"));
double price;
int unit;
string desc;
double total = 0.0;
try {
while (true) {
price = in.readdouble();
in.readchar(); // throws out the tab
unit = in.readint();
in.readchar(); // throws out the tab
desc = in.readline();
system.out.println("you've ordered " + unit + " units of "
+ desc + " at $" + price);
total = total + unit * price;
}
} catch (eofexception e) {
}
system.out.println("for a total of: $" + total);
in.close();
}
}
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